期刊
EUROPEAN BIOPHYSICS JOURNAL WITH BIOPHYSICS LETTERS
卷 49, 期 8, 页码 791-798出版社
SPRINGER
DOI: 10.1007/s00249-020-01451-y
关键词
Sedimentation velocity; Sedimentation equilibrium; MULTISIG; Hydroxyethyl aminocellulose; Self-association
类别
资金
- Norwegian Ministry of Education and Research
- University of Oslo
- UK Engineering, and Physical Sciences Research Council (EPSRC)
- UK EPSRC Centre for Doctoral Training award
The 6-deoxy-6-aminocelluloses-or aminocelluloses-are a class of synthetic natural cellulose derivatives which are mostly aqueous soluble and have excellent film-forming properties. Recent studies have connected these properties at the molecular level with protein-like self-associative behaviour for a range of aminocelluloses including a 6-deoxy-6-(omega-aminoethyl) aminocellulose AEA-1 with the association being a two-stage process-a reversible oligomerisation followed by further (semi-reversible) aggregation into larger structures. Here, we synthesise and compare a new 6-deoxy-6-(omega-aminoethyl) aminocellulose AEA-1 ' with different degree of substitution with one with further alkyl derivatisation, namely 6-deoxy-6-(omega-hydroxyethyl) aminocellulose HEA-1 '. As with AEA-1, sedimentation velocity and sedimentation equilibrium in the analytical ultracentrifuge still show a two-stage process for both AEA-1 ' and HEA-1 ', with the latter giving higher molar masses. The consequences of these properties for use as consolidants for archaeological wood are considered.
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